本文介绍了如何在Java中进行URL解码？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
在Java中，我想转换它：
https%3A%2F%2Fmywebsite%2Fdocs%2Fenglish%2Fsite%2Fmybook.do%3Frequest_type
对此：
https://mywebsite/docs/english/site/mybook.do&request_type
这是我到目前为止所拥有的：
class StringUTF
{
public static void main(String[] args)
{
try{
String url =
"https%3A%2F%2Fmywebsite%2Fdocs%2Fenglish%2Fsite%2Fmybook.do" +
"%3Frequest_type%3D%26type%3Dprivate";
System.out.println(url+"Hello World!------->" +
new String(url.getBytes("UTF-8"),"ASCII"));
}
catch(Exception E){
}
}
}
但它不能正常工作。这些％3A 和％2F 格式是什么？我如何转换它们？
But it doesn't work right. What are these %3A and %2F formats called and how do I convert them?
推荐答案
这与字符编码（如UTF-8或ASCII）无关。你在那里的字符串是 URL编码。这种编码与字符编码完全不同。
This does not have anything to do with character encodings such as UTF-8 or ASCII. The string you have there is URL encoded. This kind of encoding is something entirely different than character encoding.
尝试这样的事情：
String result = java.net.URLDecoder.decode(url, "UTF-8");
请注意字符编码（例如UTF-8或ASCII）是什么决定了字符到原始字节的映射。有关字符编码的详细介绍，请参阅。
Note that a character encoding (such as UTF-8 or ASCII) is what determines the mapping of characters to raw bytes. For a good intro to character encodings, see this article.
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